Home / 47,149.48-70,748.52-20,872.68

Finding the Fourth Proportional to 47,149.48, 70,748.52 and 20,872.68

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Solution

The fourth proportional to 47,149.48, 70,748.52 and 20,872.68 is: 31,319.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,149.48 : 70,748.52 = 20,872.68 : x
  2. Step 2: Convert to fraction form
    47,149.48/70,748.52 = 20,872.68/x
  3. Step 3: Cross multiply
    47,149.48x = 70,748.52 × 20,872.68
  4. Step 4: Simplify right side
    47,149.48x = 1,476,711,218.43
  5. Step 5: Solve for x
    x = 1,476,711,218.43/47,149.48
  6. Step 6: Final answer
    x = 31,319.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.